Whisk together brown sugar and next 3 ingredients until smooth; whisk in bourbon. Stir in coconut and toasted pecans, and spoon into prepared crust.

Step 6

Bake at 350° for 25 to 30 minutes or until golden and set. Cool completely on a wire rack (about 1 hour). Chill 1 hour. Lift baked bars from pan, using foil sides as handles. Transfer to a cutting board; cut into bars.